SL55 Power problem - anyone else suffered?
Discussion
When I really press on in the car, it gives the full Nascar violence for about 30 seconds, then, Ford Ka.... Almost as if the wastegate is stuck open, or it has dropped into a default get-you-home mode. No indications from the electronics or error messages from the console. Drive sedately for 5 minutes, and you get some performance back, but for a shorter period.
There is also a 'click' noise when I gently press the throttle at low speed that sounds like high pressured air being released, and I think this is new..
Also, the gearbox has clunked badly a few times too under full acceleration, and I wonder if the gremlin lives there? Lost drive completely once joing M42. Had to park up and restart to reset the 'box. Omigawd.
If I can't trace the problem, I'm going to have to replicate the problem with a M-B dealer service man in the car, but he will probably fill his pants!
Conspiracy theory rubbish --- Is the 500bhp just a momentary thing that is emasculated if you use it, but sells the car on the spec sheet....
There is also a 'click' noise when I gently press the throttle at low speed that sounds like high pressured air being released, and I think this is new..
Also, the gearbox has clunked badly a few times too under full acceleration, and I wonder if the gremlin lives there? Lost drive completely once joing M42. Had to park up and restart to reset the 'box. Omigawd.
If I can't trace the problem, I'm going to have to replicate the problem with a M-B dealer service man in the car, but he will probably fill his pants!
Conspiracy theory rubbish --- Is the 500bhp just a momentary thing that is emasculated if you use it, but sells the car on the spec sheet....
Yes, eventually!
It took 4 visits to differing dealers to sort out.
It was traced to a faulty Auxiliary Supercharger Cooling Pump located behind the left hand side wheelarch. The charge temp sensor detected the heat build up and the ecu made the car go into limp mode, but never wrote to the error log.
Sorted and the car stormed.
It took 4 visits to differing dealers to sort out.
It was traced to a faulty Auxiliary Supercharger Cooling Pump located behind the left hand side wheelarch. The charge temp sensor detected the heat build up and the ecu made the car go into limp mode, but never wrote to the error log.
Sorted and the car stormed.
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